<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../react资料_stu//依赖包/react.development.js"></script>
    <script src="../react资料_stu//依赖包/react-dom.development.js"></script>
    <script src="../react资料_stu//依赖包/babel.min.js"></script>
</head>

<body>
    <div id="app"></div>
    <script type="text/babel">

        class App extends React.Component {
            state = {
                name: 'laowang',
                age: 18,
                hobby: '吃饭'
            }
            render() {
                const { name, age, hobby } = this.state
                return (
                    <div>
                        姓名: <input type="text" value={name} onChange={this.changeForm('name')} />
                        <br />
                        年龄: <input type="text" value={age} onChange={this.changeForm('age')} />
                        <br />
                        爱好: <input type="text" value={hobby} onChange={this.changeForm('hobby')} />
                        <br />
                        <button onClick={this.handle}>提交</button>
                    </div>
                )
            }
            //changeForm函数在虚拟DOM渲染的时候就已经调用了,会把这个函数的返回值交给了onChange
            /* 
              changeForm:是一个高阶函数
              下边这种写法:函数柯里化的写法
            */

            changeForm = (type) => {
                // console.log(type);
                // 返回的函数才是真正的onChange事件函数
                return (e) => {
                    const { value } = e.target;
                    this.setState({ [type]: value })
                }
            }

            handle = () => {
                const { name, age, hobby } = this.state
                console.log(name, age, hobby);
            }
        }
        ReactDOM.createRoot(document.getElementById('app')).render(<App />)
    </script>
</body>

</html>